@NITZ69.
Are you running the 1.4 patch as admin? Right click the .exe and check under attributes (I have a Swedish OS so I´m not sure about the English word for "egenskaper" ) that you do.
Do you have the UAC on or off? Check in Controlpanel\Useracounts, you can activate or deactivate it from there. Be sure to leave it on when installing.
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